In the same style, North Sea employed minimal narration and relies on action, dialogue and characterisation to tell its story.
The John Gillman, a deep-sea castle-class trawler is damaged during a storm in the North Sea and seeks help from the Wick coastguard.
Eventually, after a struggle against the elements, the dangers are overcome, and the ship returns safely to harbour.
It provided a second role for the real-life Bill Blewitt, the Cornish postman who had proved a star turn in the first film.
North Sea proved popular[2] and was to lead to a number of feature-length dramatised documentaries during the 1940s, including Target for Tonight, Coastal Command, Fires Were Started, and Western Approaches.